minio/docs/metric

Minio Prometheus Metric

Minio server exposes an endpoint for Promethueus to scrape server data at /minio/prometheus/metric.

Prometheus probe

Prometheus is used to monitor Minio server information like http request, disk storage, network stats etc.. It uses a config file named prometheus.yaml to scrape data from server. The value for metrics_path and targets need to be configured in the config yaml to specify the endpoint and url as shown:

scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: minio
    metrics_path: /minio/prometheus/metrics

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      - targets: ['localhost:9000']

Prometheus can be run by executing :

./prometheus --config.file=prometheus.yml

List of Minio metric exposed

Minio exposes the following list of metric to Prometheus

• minio_disk_storage_bytes : Total byte count of disk storage available to current Minio server instance
• minio_disk_storage_free_bytes : Total byte count of free disk storage available to current Minio server instance
• minio_http_requests_duration_seconds_bucket : The bucket into which observations are counted for creating Histogram
• minio_http_requests_duration_seconds_count : The count of current number of observations i.e. total HTTP requests (HEAD/GET/PUT/POST/DELETE).
• minio_http_requests_duration_seconds_sum : The current aggregate time spent servicing all HTTP requests (HEAD/GET/PUT/POST/DELETE) in seconds
• minio_http_requests_total : Total number of requests served by current Minio server instance
• minio_network_received_bytes_total : Total number of bytes received by current Minio server instance
• minio_network_sent_bytes_total : Total number of bytes sent by current Minio server instance
• minio_offline_disks : Total number of offline disks for current Minio server instance
• minio_total_disks : Total number of disks for current Minio server instance
• minio_server_start_time_seconds : Time Unix time in seconds when current Minio server instance started